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June 12th, 2026 :: 6:05 am CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated June 12th at 4:54 am 
Temperature:64°F Dew Point:61°F
Barometer:29.95 inHg Wind:N 9 Mph
Humidity:88.1% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jun 12th
Saturday
Jun 13th
Sunday
Jun 14th
Monday
Jun 15th
Tuesday
Jun 16th
Sunny Mostly Sunny Mostly Sunny Mix of Cloud and Sun Mostly Sunny
77°F
76°F
62°F
69°F
58°F
72°F
57°F
76°F
60°F
 
 Decatur Detailed Weather Forecast  
 
Friday, June 12th, 2026
Morning Temperature: 67°F
Sunny.
Afternoon Temperature: 77°F
Sunny. Windy at times.
Evening Temperature: 70°F
Clear.
Saturday, June 13th, 2026
Overnight Temperature: 63°F
Mostly clear.
Morning Temperature: 68°F
Mostly sunny. Windy at times.
Afternoon Temperature: 74°F
A mix of sun and cloud with a slight chance of showers or thundershowers. Windy at times.
Evening Temperature: 73°F
A mix of cloudy and clear skies. Chance of a thunderstorm. Windy at times.
Sunday, June 14th, 2026
Overnight Temperature: 69°F
A mix of cloudy and clear skies with a chance of showers or thundershowers.
Morning Temperature: 60°F
Sunny with cloudy periods with a chance of showers. Windy at times.
Afternoon Temperature: 69°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 62°F
Mostly clear. Windy at times.
Monday, June 15th, 2026
Overnight Temperature: 57°F
Mostly cloudy.
Morning Temperature: 64°F
Mostly sunny.
Afternoon Temperature: 72°F
A mix of cloud and sun. Windy at times.
Evening Temperature: 64°F
Mostly cloudy. Slight chance of a thunderstorm.
Tuesday, June 16th, 2026
Overnight Temperature: 62°F
A mix of cloudy and clear skies.
Morning Temperature: 65°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 76°F
Sunny with cloudy periods with a slight chance of showers or thundershowers. Windy at times.
Evening Temperature: 67°F
Clear with cloudy periods. Chance of a thunderstorm.
Wednesday, June 17th, 2026
Overnight Temperature: 64°F
Mostly cloudy with a slight chance of showers. Windy.
Morning Temperature: 68°F
A mix of cloud and sun with a slight chance of showers. Windy.
Afternoon Temperature: 80°F
Sunny. Chance of a thunderstorm. Windy.
Evening Temperature: 77°F
A mix of cloudy and clear skies with showers likely. Chance of a thunderstorm. Wind 20 to 30 mph.
Thursday, June 18th, 2026
Overnight Temperature: 72°F
Mostly clear with a few showers. Chance of a thunderstorm. Windy.
Morning Temperature: 65°F
Sunny with a slight chance of showers. Windy at times.
Afternoon Temperature: 74°F
Sunny. Windy at times.
Evening Temperature: 68°F
Clear.
Friday, June 19th, 2026
Overnight Temperature: 61°F
Mostly clear.
Morning Temperature: 68°F
Mostly sunny.
Afternoon Temperature: 77°F
Mostly sunny. Windy at times.
Evening Temperature: 70°F
Clear with cloudy periods.
Saturday, June 20th, 2026
Overnight Temperature: 68°F
Mostly cloudy with showers likely. Windy at times.
Morning Temperature: 74°F
Mostly cloudy with showers likely. Chance of a thunderstorm. Windy.
Afternoon Temperature: 84°F
Mostly sunny with showers likely. Chance of a thunderstorm. Windy.
Evening Temperature: 79°F
Clear with showers likely. Chance of a thunderstorm. Windy.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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